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Claude 4.8 Opus×

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	Claude 4.8 Opus Anthropic	GPT-5 OpenAI	Llama 4 Maverick Meta	DeepSeek-V4-Flash DeepSeek
Vendor	Anthropic	OpenAI	Meta	DeepSeek
Family	Claude	GPT	Llama	DeepSeek
Release date	2026-05-28	2025-08-07	2025-04-05	2026-04-22
Context window	1,000,000 tokens	400,000 tokens	1,000,000 tokens	1,000,000 tokens
Parameters	—	—	400B	284B (13B active)
Modality	text, vision	text, vision, audio	text, vision	text
License	proprietary	proprietary	Llama 4 Community License	MIT
Source	proprietary	proprietary	open weights	open weights
Description	Anthropic's flagship hybrid-reasoning model — Opus 4.8 pushes coding and AI-agent workflows further (agentic coding 69.2% vs 64.3% on 4.7; multidisciplinary reasoning 57.9% vs 54.7%). 1M-token context, $5/$25 per MTok pricing held flat from Opus 4.7. Introduces Dynamic Workflows for Claude Code (research preview). GA on Anthropic API (`claude-opus-4-8`), AWS Bedrock, Google Vertex, Microsoft Foundry, and GitHub Copilot.	OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.	Mixture-of-experts open-weight model from Meta.	Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE.
Links	vendor →	vendor →	weights →	weights →
Benchmarks
MMLU-Pro	—	85.1%	80.5%	—
GPQA-D	—	87.3%	—	—
HumanEval	—	95.2%	—	—
Aider	—	85.4%	—	—
AIME-25	—	91.0%	—	—
LiveCB	—	74.5%	—	—
MMMU	—	74.1%	68.5%	—